Effect of shock-wave loading on the internal microstructure and mechanical properties of fine-grained copper

O. N. Ignatova, I. I. Kaganova, A. N. Malyshev, A. M. Podurets, V. A. Raevskii, V. I. Skokov, M. I. Tkachenko, G. A. Salishchev, T. N. Kon'kova

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

It is shown that preloading of fine-grained copper with a the grain size of 0.5 m by a shock wave of intensity ≈25–50 GPa does not lead to changes in its internal microstructure and mechanical properties, and the dislocation density increases only slightly from 1.8 · 1011 cms-2 in the initial state to (3.1–3.6) · 1011 cms-2 after shockwave loading. An increase in shock wave intensity to pressures > 55 GPa leads to a decrease in the dislocation density to 2.5 · 109 cms-2, an increase in the grain size to ≈19 fum, the occurrence of microtwins inside the grains, and a reduction in the mechanical properties of fine-grained copper to the level of coarse-crystalline copper.

LanguageEnglish
Pages719-723
Number of pages5
JournalCombustion, Explosion and Shock Waves
Volume46
Issue number6
DOIs
Publication statusPublished - 1 Nov 2010

Fingerprint

Shock waves
shock waves
Copper
mechanical properties
copper
Mechanical properties
microstructure
Microstructure
grain size
prestressing
occurrences
Crystalline materials

Keywords

  • conventional yield stress
  • dislocation density
  • fine-grained metals
  • loading intensity
  • shock wave
  • softening

Cite this

Ignatova, O. N. ; Kaganova, I. I. ; Malyshev, A. N. ; Podurets, A. M. ; Raevskii, V. A. ; Skokov, V. I. ; Tkachenko, M. I. ; Salishchev, G. A. ; Kon'kova, T. N. / Effect of shock-wave loading on the internal microstructure and mechanical properties of fine-grained copper. In: Combustion, Explosion and Shock Waves. 2010 ; Vol. 46, No. 6. pp. 719-723.
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abstract = "It is shown that preloading of fine-grained copper with a the grain size of 0.5 m by a shock wave of intensity ≈25–50 GPa does not lead to changes in its internal microstructure and mechanical properties, and the dislocation density increases only slightly from 1.8 · 1011 cms-2 in the initial state to (3.1–3.6) · 1011 cms-2 after shockwave loading. An increase in shock wave intensity to pressures > 55 GPa leads to a decrease in the dislocation density to 2.5 · 109 cms-2, an increase in the grain size to ≈19 fum, the occurrence of microtwins inside the grains, and a reduction in the mechanical properties of fine-grained copper to the level of coarse-crystalline copper.",
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Ignatova, ON, Kaganova, II, Malyshev, AN, Podurets, AM, Raevskii, VA, Skokov, VI, Tkachenko, MI, Salishchev, GA & Kon'kova, TN 2010, 'Effect of shock-wave loading on the internal microstructure and mechanical properties of fine-grained copper' Combustion, Explosion and Shock Waves, vol. 46, no. 6, pp. 719-723. https://doi.org/10.1007/s10573-010-0096-3

Effect of shock-wave loading on the internal microstructure and mechanical properties of fine-grained copper. / Ignatova, O. N.; Kaganova, I. I.; Malyshev, A. N.; Podurets, A. M.; Raevskii, V. A.; Skokov, V. I.; Tkachenko, M. I.; Salishchev, G. A.; Kon'kova, T. N.

In: Combustion, Explosion and Shock Waves, Vol. 46, No. 6, 01.11.2010, p. 719-723.

Research output: Contribution to journalArticle

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T1 - Effect of shock-wave loading on the internal microstructure and mechanical properties of fine-grained copper

AU - Ignatova, O. N.

AU - Kaganova, I. I.

AU - Malyshev, A. N.

AU - Podurets, A. M.

AU - Raevskii, V. A.

AU - Skokov, V. I.

AU - Tkachenko, M. I.

AU - Salishchev, G. A.

AU - Kon'kova, T. N.

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AB - It is shown that preloading of fine-grained copper with a the grain size of 0.5 m by a shock wave of intensity ≈25–50 GPa does not lead to changes in its internal microstructure and mechanical properties, and the dislocation density increases only slightly from 1.8 · 1011 cms-2 in the initial state to (3.1–3.6) · 1011 cms-2 after shockwave loading. An increase in shock wave intensity to pressures > 55 GPa leads to a decrease in the dislocation density to 2.5 · 109 cms-2, an increase in the grain size to ≈19 fum, the occurrence of microtwins inside the grains, and a reduction in the mechanical properties of fine-grained copper to the level of coarse-crystalline copper.

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KW - fine-grained metals

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